WordNet sense 1 (informal terms for a meal):

chow, eats, grub

WordNet sense 2 (throw away):

ditch

WordNet sense 3 (throw carelessly):

toss

WordNet sense 4 (pat or squeeze fondly or playfully, especially under the chin):

pat

WordNet sense 5 (eject the contents of the stomach through the mouth):

barf, cast, cat, disgorge, honk, puke, purge, regurgitate, retch, sick, spew, upchuck, vomit, regorge, spue, be sick, throw up, vomit up